技术中心

变温热源不可逆制冷机分析 【英文篇名】 Analysis of an irreversible refrigerator with variable temperature heat reservoirs 【作者中文名】 黄跃武; 孙德兴; 【作者英文名】 Huang Yuewu and Sun Dexing Donghua University; Shanghai; China; 【作者单位】 东华大学; 哈尔滨工业大学; 【文献出处】 暖通空调, Hv 制冷循环; 优化; 【英文关键词】 finite-time thermodynamics; refrigeration cycle; optimization; 【摘要】 利用有限时间热力学分析了变温热源制冷循环性能,计入了工质与高低温侧换热器的热阻损失,热源之间的热漏损失及工质内部耗散的不可逆损失。在给定制冷率条件下,推导出最大性能系数和高低温侧循环工质温度的解析式,通过数值计算,分析了各不可逆损失对循环性能的影响。 【英文摘要】 Analyses a refrigeration cycle performance with variable temperature heat reservoirs by means of finite-time thermodynamics. Reckons in the thermal resistance loss between working fluid substance and the high/low temperature side heat exchanger, heat leaks between the heat reservoirs and internal dissipations of the working fluid. Under a given cooling load condition, obtains an expression formula of maximum performance coefficient and temperature of warm and cold working fluid in refrigerator. Examines the...